Pruning Trees and Shrubs

1
Pruning Trees and Shrubs

• Rick Abrahamson
• University of Minnesota Extension
• Clay County

2
When should trees and shrubsbe pruned?
3
January - February

• Oak
• Oak Wilt
• Elm
• Dutch Elm Disease

4
March

• Oak
• Ash
• Ash borer
• Birch
• Bronze Birch borer

5
Early April (1st 15th)

• Fireblight control
• Apple/crabapple
• Mountain-ash
• Cotoneaster
• Shade and ornamental trees
• Hackberry
• Linden
• Poplar

• Stem canker control
• Honey-locust